Fish gathering and conveying system for water diversion type power generation high dam

Abstract

The invention provides a fish gathering and conveying system for a water diversion type power generation high dam. A water diversion system, a fish gathering channel, a fish inducing channel, an elevating system and a counting and temporary rearing system are included. The fish gathering channel and the fish inducing channel are arranged in parallel. The front end of the fish gathering channel andthe front end of the fish inducing channel get into water, the rear end of the fish gathering channel and the rear end of the fish inducing channel communicate with the vertically-fixed elevating system, the upper portion of the elevating system communicates with the horizontally-fixed counting and temporary rearing system, and the bottom of the other end of the counting and temporary rearing system is connected with a pipeline capable of stretching into a movable body fish conveying vehicle. The water diversion system is arranged in the fish gathering channel and the fish inducing channel for diversion. According to the fish gathering and conveying system, in the aspect of the fish passing effect, the effect that the attraction force of the attraction flow of the fish gathering and conveying system is increased, and the power generation tail water competing flow attraction force is reduced is enhanced; and meanwhile, fish inducing channel attraction flow and fish gathering channel attraction flow are gathered into one strand of attraction flow at an inlet, and the attraction flow attraction range is greatly enlarged.

Description

technical field [0001] The invention relates to a system for collecting and transporting fish used for diversion-type high dams for power generation, and belongs to the technical field of water conservancy and hydropower projects for fish to pass upwards over dams. Background technique [0002] The blocking of fish communication channels upstream and downstream of the dam site and the blocking of fish gene exchange are environmental problems that need to be solved urgently in the development, construction and operation of water conservancy and hydropower projects. To this end, the former General Office of the State Environmental Protection Administration issued the "Letter on Printing and Distributing the Minutes of the Symposium on Water Environment and Aquatic Ecological Protection Technology Policy for Hydropower and Water Conservancy Construction Projects", and the former Ministry of Environmental Protection and the National Energy Administration jointly issued the "About...

AI Technical Summary

Problems solved by technology

However, the problem of fish passing in high-head dams has always been a worldwide technical problem. Many core issues of fish passing technology in high dams and large reservoirs have not been studied and solved, especially the problem of fish passing in high-head dams in canyon areas, which is limited by The project layout conditions are limited, and the situation is particularly severe

The above-mentioned fish lift often requires multiple lifting platforms, and the lifting span is relatively large, which is suitable for the situation where the slope of the dam body is flat and the space behind the dam is sufficient; Under the influence of the competing flow of the fish machine, it is often difficult for fish to find the fish lift inlet against the current. In the case of power generation, fish are often attracted to the draft pipe of the power generation, thus missing the fish lift inlet

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